Author Affiliations

F. Sandner,^1,* T. Siday,¹ M. Plankl,¹ P. E. Faria Junior,¹ S. Brem,^2,3 M. Zizlsperger,¹ R. Perea-Causin,³ F. Schiegl,¹ S. Nerreter,¹ S. Maier,¹ F. Mooshammer,^1,4 M. A. Huber,¹ M. Gmitra,¹ J. Fabian,¹ E. Malic,^2,3 T. L. Cocker,⁵ and R. Huber¹

¹Department of Physics, University of Regensburg, 93040 Regensburg, Germany

²Department of Physics, Philipps-Universität Marburg, 35037 Marburg, Germany

³Department of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden

⁴Department of Physics, Columbia University, New York, NY 10027, USA

⁵Department of Physics and Astronomy, Michigan State University, 48824 Michigan, USA

^*Corresponding author: fabian.sandner@ur.de